Our neighbour Peter worked with land (3,6)
I believe the answer is:
red planet
'our neighbour' is the definition.
I can't tell whether this definition defines the answer.
'peter worked with land' is the wordplay.
'worked with' indicates an anagram.
'peter' with its letters anagrammed with 'land' makes 'RED PLANET'.
Can you help me to learn more?
(Other definitions for red planet that I've seen before include "one of our neighbours" , "Colourful description of Mars" , "celestial body" , "Informal name for Mars" , "Mars is colourfully known as the . . . . . . . . ." .)